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Typological differentiation of coronary arteries binds to various areas of vascularisation, which could suggest essential differences between vasculatory dimensions. There are not many papers analysing the influence of heart vascularisation on epicardial vessel dimensions during postnatal human life, furthermore, there are hardly any papers dealing with the prenatal period. The subject of examination was 188 human foetuses from 4th to 7th month of prenatal life. Foetuses were fixed for minimum 3 months in 9% formalin solution. They were taken from natural abortions and did not characterise any external malformations. There was a different number of foetuses in a variety of morphological age groups. Adachi classification was used to describe all types: type I — classical, with equal coronary arteries, type II — predominance of right coronary artery, type III — predominance of left coronary artery. Speed of circumflex branch growth in different types of vascularisation is various. Analysis of the differences among dimensions of artery in various types showed there are statistically crucial ones, especially between: types III and I or types III and II.
In an evaluation of foetal hearts in II and III pregnancy semester, correlation with exterior foetal dimensions should be taken into consideration. It is interesting also if all exterior heart dimensions are correlated at the same level with overall body dimensions. The subject of examination was 204 foetuses of both sexes, including 106 males and 98 females, in 5th and 6th month of foetal life. Foetuses were fixed for minimum 3 months in 9% formalin solution. They were taken from natural abortions, without exterior features of developmental malformations. Examined material was evaluated in month groups of morphological age. The number of foetuses in different groups was various. Exterior heart dimensions were considered: height, width, heart depth, and also heart circumference in coronary sulcus (atrial-ventricular). Exterior dimensions of foetuses were: vertex-plantare, vertex-tubulare. All exterior dimensions of heart are closely and strongly correlated with both exterior dimensions of foetuses.
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